What is the mathematical inequality shown in the image?

The inequality shown in the image is:

x < 5

This inequality represents all numbers less than 5.

The options provided are intervals:

• (-∞; 5]: This includes all numbers less than or equal to 5.
• [5; ∞): This includes all numbers greater than or equal to 5.
• (-∞; 5): This includes all numbers less than 5.
• (5; ∞): This includes all numbers greater than 5.

The inequality x < 5 corresponds to the interval (-∞; 5), as it includes all numbers strictly less than 5, excluding 5 itself.

Answer: (-∞; 5)